there's no buy back possible atm, 20 bonds have approx 3.4 btc back dividends due I believe & some value going forward as either free or paid upgrade to Teramining, you will need to do the claims process to realize any of this though, affidavit etc - fairly easy if you're in the US but still worth doing if not with current BTC price.
No buy back?
How's that? so what for do I need this bonds?
How it is possible that there is no buy back?
GLBSE was auto-terminated in a big mess, now Giga makes the rules of how this will go forward in a way that he feels will protect him from potential problems, he insists you follow his claims process & doesn't allow any bonds/shares to be sold or transferred to others, he is not offering any buy backs atm mostly due to their being no market in which to value them & maybe for other reasons, anyway he's not negotiating on this so you either accept that or not.